When compiling an OpenCL program directly with `clang` using
`--save-temps`, an
error may occur if the program contains OpenCL builtins:

```
test.cl:3:21: error: use of undeclared identifier 'get_global_id'
    3 |   unsigned int id = get_global_id(0);
      |                     ^
```

This happens because the driver does not add `-fdeclare-opencl-builtins`
when
the input type is `TY_PP_CL`. This PR fixes the issue.

Identified with misc-include-cleaner.

See
https://discourse.llvm.org/t/rfc-deprecate-and-eventually-remove-renderscript-support/81284
for the RFC

Flang is switch to cc1 when we use `-x cuda`. Make sure we can use fc1
with cuda fortran input.

The current pipeline will fail at MLIR level for the moment.

This reverts commit af81b4f9f98f6ac89f876637f065d6525e374468.

Flang is switch to cc1 when we use `-x cuda`. Make sure we can use fc1
with cuda fortran input.

The current pipeline will fail at MLIR level for the moment.

Reverts llvm/llvm-project#104613

Flang is switch to cc1 when we use `-x cuda`. Make sure we can use fc1
with cuda fortran input.

The current pipeline will fail at MLIR level for the moment. 

#104483

Relates to #98761: `-fmodule-file` requires `/std:c++20` or greater, but
passing that option results in an unused argument warning. This resolves
that.

We can directly call `clang -c -x cl -target amdgcn -mcpu=gfx90a test.cl
-o test.o`
to compile an OpenCL kernel file. However, when `--save-temps` is
enabled, it doesn't
work because the preprocessed file (`.i` file) is taken as C source file
when it
is fed to the front end, thus causing compilation error because those
OpenCL keywords
can't be recognized. This patch fixes the issue.